html,body{
	height: 100%;
	width: 100%;
	padding: 0px;
	margin: 0px;
	left:0px;
	right: 0px;
	top: 0px;
	bottom: 0px;
	user-select: none;
	background-color: #C7EDCC;
}
.game-father{
	margin: 0 auto;
	width: 90%;
	height: 80%;
	position: relative;
	max-width: 800px;
}
.game-button-2048button{
	padding: 20px;
	height: 100px;
	width: 100px;
	border-radius: 50px;
	color: #4d474d;
	line-height: 100px;
	text-align: center;
	margin-left: 50px;
	margin-top: 20px;
	float: left;
	font-size: 40px;
	font-weight: bold;
	border: solid 1px black;
}
.game-button-2048button:active{
	transition: all 0.2s ease-in-out;
	background-color:rgb(212, 196, 196);
	box-shadow: 0px 0px 30px 0px rgb(212, 196, 196);
	color: black;
}
.operation{
	width: 90%;
	height: 50px;
	margin: 0 auto;
	padding: 15px;
	border-bottom: solid 1px #000000;
/* 	border-radius: 20px;
	box-shadow: 0px 0px 30px 0px #000000; */
}
.operation-right{
	width: 40%;
	float: left;
	text-align: left;	
	margin-left: 10%;
}
.operation-left{
	width: 40%;
	float: left;
}
.button-style{
	padding: 15px;
	color: white;
	background: rgb(14, 232, 232);
	box-shadow: 0px 0px 30px 0px rgb(14, 232, 232);
	border-radius: 20px;
	outline: none;
	border: none;
	float: right;
}
.button-style:active{
	transition: all 0.2s ease-in-out;
	background-color: white;
	color: black;
}

.course-style{
	padding: 15px;
	font-size: 40px;
	color: red;
}